Bottle capping throat



Dec. 8, 1931. H. J. LEBHERZ 1,835,990

BOTTLE CAPPING THROAT Filed March 21, 1930 9 Iii-E 'ELIIlIII A m FM IN V EN TOR.

Jam/cg Ia/( 143mm 4 ATTORNEY;

Patented Dec. 8, 1931 UNITED STATES P T NT -1 HARRY .r. LEIBHER-Z, or FREDERICK, MARYLAN ASSiGNOR 'ro'rnE Ev REnY cont .PANY, or FREDERICK, MARYLAND, A coRroR vrron. or MARYLAND. Q

BOTTLE CAI-PING THROAT Application filed March 21, 1930., Serial no. 437,832,

My invention relates broadly to bottle capping tools and more particularly to the capping throat of a bottle capping tool.

One of the objects of my invention is to provide a construction of bottle capping throat for a bottle'capping tool in which a crown cap may bereadily centered in the capping throat and retained therein preparatory to a capping operation. i

vide a construction of bottle capping throat having a depending skirt thereon for embracing the peripheral edge of a crown cap preparatory to a bottle capping operation for applying a radially inward uniform thrust upon the peripheral edge of the cap thereby contracting the diameter of the cap and enabling the cap to be retained in a bottle capping position inthe capping throat 2 preparatory to a bottle capping operation. j

Still anotherobject of my invention is to provide a construction of bottle capping throat having an angularly disposed annular wall forming the inner periphery of the bottle capping throat and serving to contract the diameter of the skirt of a crown cap which is inserted for resiliently retaining the crown cap in bottle capping position preparatory to a bottle capping operation.

Other and further objects of my invention reside in the construction of crown cap set forth more fully in the specification hereinafter following by reference to the accompanying, drawings, wherein:

ping tool equipped with the bottle capping throat of my invention; Fig. 2 is a crosssectional view taken through the bottle caps ping throat of my invention and illustrating the angularly disposed annular wall forming the inner periphery of the bottle capping throat and illustrating a crown c'ap prepara-- tory to the insertion thereof in position within the bottle capping throat; Fig. 3 is a cross-' Figs. 5, 6 and 7 are cross-sectional'views il- Another object of my invention is to pro:

Figure 1 is a side elevation of a bottle caplustrating the methodof applyingacrowncap to a bottle utilizing, the cappingthroat of my invention In operating a, bottle vcapping tool difli-. culty has been experienced in properly locat ing the crown capwith respect tothe bottle which is being cappedi T Variousforms ofwire clips have beenproposed heretofore forretaining thecrown cap .in position with res spect to the capping throat. It has also :been proposed to magnetize thebottle. capping throat in order to suspend the crowncap in positionpreparatory to a bottle capping operation. The wire clip suspended on the edge of the bottle capping throat for positioning.

a crown cap with respect to the bottle being,

capped ,has a number of disadvantages,

among which I 'may mention the protrusion of the" wirememberoutside of the. overall dimensionof the bottle "capping throat re sulting in interference with they work which is normally performed inlimited space. Fur.- thermore, the wire retaining clip requires additional operations in the manufacture of the capping throat-and is accordinglyundesirable from the manufacturing standpoint.

The magnetic type of bottle capping throat I does not retain its magnetism and while eferal edge ,ofthe skirt of the cap and enabling the cap to frictionally and resiliently engage; a specially prepared inner wall in thebottle capping throat whereby the capis -retained in position'prep'aratory to a bottle capping operation. I have found that-the" inner wall of thebottle capping throat may, be equipped with a depending skirt whichis angularly disposed with respect/to the 'up-- per portion of the innerrwall of thebottle capping throat. The angularly: disposed an nular wall portion 'is' subst'antially in-the j I v shape of a truncated cone, the base diameter of which corresponds to thejoriginal diameter of the crown cap. By subjecting the crown cap to an upward movement into the capping throat, the conical shaped annular wall portion of the capping throat actsupon the crown cap toeffectively contract the diameter of the cap Which results in the es-. tablishment of V radial forces substantially normaltoj the center linejjof the capping throat which'serves to frictionally and resiliently maintain the crown capin position within the capping throat preparatory for a bottle capping operations, :Inythis way an auxiliary wire retaining clip for the crown cap is wholly unnecessary and the magnetizingofthe throat is entirely eliminated, and

- yet I have found that crown caps may be residesin the deformation of the crown-cap. when-it isinitially inserted in the throat.

' ping-operation; 7

'Re'ferringto the drawings-ln'more detail, reference character 1 designatesa supportmg rapidly inserted inthe bottle cappingjthroat i by a quickiupward movement between eachsuccessive bottle'cappingoper'ationto insure the performance of thezbottle capping tool during each 7 capping operation. I have found the construction of capping throat ofmy invention so effective that when the crown 7 cap is inserted in the throat, theonly practical method of withdrawing the crown cap from vthe throat is by performing a bottle capping operation; The principle I involved in" the bottle [capping l throat of my invention The contracting of the-s-ize of the cap results in the retention of-the cap ingacentralposition in" the capping throat for the accuratealignment thereof with thetop of a bottleinsuring a tight seal during the bottle cap standof abottle capping tool which termiis pendin'g skirt- 10 "omthe inner periphery of nates in a guide head 2 at the top-thereof and is provided with a supporting base 3 at the bottom-thereof. A bottle; capping throat 4:

- is carried by plunger 5 and extends through thehead '2. A gearsystem driven'by hand lever '6 cooperates with the rack 7 formed on the plunger 5 enabling a downward move-' ment to be-appli'ed to the capping throatt in-f performing a bottle capping oper ation upon the bottleindicated at 8;; The bottle capping throat; e h'as an I upper wall portion: 9 and" a depending skirt '10 which-merges into theupper wall portion 9 along a curved surfacell; The depending skirt 10 has an an nular 'wall'formed on its inner surface which is angularly disposed with respect to the axis .Offthe bottle.- cappinggthroat. The crown" cap'which 1 haveillustrated at 121and shown as having crimped edges 14 has an original diameter illustrated at X; The base' of-=the bottlefjcapping' throat -at its :inner diameter has acorresponding"dimension X."- As illustratedpj-in Sthe inclination of the dethe capping throat is such that when the crown cap 12 is inserted upwardly into the capping'throat, radially inward forces are introduced which serve to decrease the efiective diameter of the crown cap. That is the effect :of moving the crown cap 12 upwardly along the conical'shaped annular depending skirt .10 is the dBfOIIllfltlOl'lOf the crown cap from its original diameter X to a smaller diameter of frictional and resilientforcesby which the crown capl2 tends to cling within the bottle That is, the crown cap is capping throat. retained in position precisely centered with the plane of the peripheral edge of thecap extendingsubstantially normal to the axis of the-capping throat. -Fi'g. 3 showsthe position of the crown capwhich the crowncapassumes when thecap is pressed upwardly int-o'the capping throat.

This results in the introduction In Fig; 5 I have shown theinitial bottle capping operation in which the throat- 4 has received its first vertical thrust downwardly over the neck of the bottle 8. The crown cap has had its horizontally disposed top moved into the upper portion of thecapping throat with the substantially vertical'walls thereof extendingsubstantially parallel to the upper annular wal'll9 of the cappingthroat. However the lower crimped edge of the cap hascommenced to seat against the curved wall portion '11 within xthe capping throat. r Y 1 w' r In Fig.6 th'e downward thrust of the'bottle-cappingtool-is shown'complete as'a re sult of'which the curved surface 11 has acted uponthe cri'rnped edges 14 of the crown cap; a 12 and has forced such-edges beneath theannular groove 15 in the neck of the bottle 8,

establishing a tight'seal by the compression aperture 18 in the top of the bottle capping throat- 4. The bottle capping throat 4 is 7 provided with an annular downwardly eX- .tending edgeportion 19 therein which forms with the extremity of the inwardly. projectingportion 17,'an anvi'l'whi'ch strikes the f central portion of the crown cap 12 as illus tratedat 20, thereby forcing the-cap against the neckof the bottle and depressing the'center of the can for sealing the cork filler 16 over both sides of the neclrof the'bottle.

II1' OI'Cl6I-tO' retain the capping throat 4 in position with respect to plunger 5 the projecting portion 17 of'plungerfi is'swaged-or expanded within the'aperture 1'8of the bottlecapping throat 4: as "represented at "21.

V The {depth of the upper wall 9 is Leo-selected a, ITO

lee

- posed annular skirt is selected of such length as will permit of the contraction of the cap sufiiciently to introduce resilient and frictional forces for retaining the cap in position preparatory to the bottle capping operation.

The bottle capping throat of my invention has proven highly practical and successful in operation and while I have described a preferred embodiment of my invention I desire that it be understood that modifications may be made and that no limitations are intended other than are imposed by the scope of the appended claims. I

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

1. In a bottle capping tool, a bottle capping throat adapted for vertical movement toward or away from a bottle in the process of applying a crown cap to a bottle, said bottle capping throat including an annular wall structure having an upper cylindrical wall portion and a lower skirt depending therefrom, said lower skirt having an angularly disposed annular wall interiorly thereof for receiving and retaining a crown cap preparatory to a bottle capping operation, said angularly disposed wall being connected through a curved wall with said cylindrical wall portion, and a downwardly depending center anvil in the top of said throat for depressing the center of the crown cap as the cap moves into the cylindrical wall portion of said throat in applying said cap to the neck of a bottle.

2. A bottle capping throat comprising an inverted cup member having a cylindrical wall including an upper wall portion and a lower depending skirt integrally connected therewith, said lower depending skirt having an angularly disposed annular wall adapted to receive a crown cap and retain said cap in position preparatory to a bottle capping operation, said angularly disposed wall being connected by a curved wall with said cylindrical wall and a downwardly projecting anvil in the top of said cup member for depressing the center of said cap toward the neck of the bottle as the angularly disposed wall, said curved wall andrthe cylindrical wall of the cup member successively operate 7 upon said cap.

3. A bottle capping throat comprising an inverted cup shaped member having an annular downwardly projecting anvil centrally disposed therein and including a cylindrical wall, an annular depending skirt connected with said wall with the interior surface of said depending skirt angularly disposed with v respect to the surface of said annular wall, a

curved surface. interconnecting said annular wall and said angularly disposed skirt, said angularly disposed skirt operating to deform a crown cap from its original dimension when the crown cap is inserted into said inverted cup shaped member preparatory to a bottle capping operation and said curved surface and annular wall operating to guide the crown cap during a bottle capping operationv upon the neck of a bottle, said anvil operating to depress the center of said cap into the neck of the bottle.

4. A bottle capping throat comprising an inverted cup shaped memberhaving a center anvil therein and including a cylindrical wall portion having a predetermined fixed diameter less than the normal diameter of the peripheral edge of the skirt of a crown cap,

and an angularly disposedwall having the shape of a frustum of a cone, the lower extremity of said angularly disposed wall have ing a diameter substantially equal to the normal diameter of the peripheral edge of the skirt of the crown cap and the upper extremity of said angularly disposed wall having a diameter less than the normal diameter of the peripheral edge of thecrown cap but greater than the diameter of said cylindrical wall portion, and an intermediate curved wall interconnecting said angularly disposed wall with said'cylindric al wall whereby the skirt a of the crown cap may be decreased in effective diameter by the advancement thereof from a position at the lower extremity of said angularly disposed wall into the cylindrical portion of said bottle capping throat and crimped around the neck of a bottle.

5. A bottle capping throat comprising an inverted cup shaped member apertured centrally of thetop thereof, a plunger having an end portion of reduced diameter projecting through the aperturein the top of said throat, an annular anvil integral with said cup shaped member surrounding the apertured portion thereof, the projecting end 0 said plunger being laterally expanded in the apertured portion of said throat and terminating flush with the surface of said annular anvil, said throat having'a cylindrical wall portion and a skirt portion with the walls of said skirt port-ion disposed in the shape of'a frustum of a cone, and a curved,

wall interconnecting said angularly disposed wallwith the cylindrical wall portion where? by a crown cap is successively operated upon .by inwardly directed pressure in the zones defined by said skirt portion, said curved wall portion and the cylindrical wall portion of the throat in applying the capto the neck of a bottle in a position in which said anvil depresses the center ofvthe cap toward the neck of the bottle in the final capping opera- I tion.

In testimony whereof I afiix my signature.

HARRY J. LEBHERZ. 

